I read your headlight connector bit, but didn’t understand, and then got distracted. LOL
I’m not sure about what you say about wiring, connectors, and switched grounds. I need to investigate. I’d like to just run a resistor on the high beam side so my indicator works.
Right now I run just one of the resistor boxes from Super bright LED’s on the passenger side. Double sided tape holding it to the air box. It has the connectors on pigtails and 2 of the gold anodized 6 ohm resistors inside it.
It gets pretty hot.
You can easily just unplug it and plug in standard bulbs. Using just one standard bulb let’s the high beam indicator work.
I want to try just one resistor on the high beam side to reduce heat and wasted power.